SAN FRANCISCO — Lightning has delayed the 49ers’ game against the host Seattle Seahawks with 3:13 remaining in a scoreless first quarter.

Both teams headed to their respective locker rooms at 6:05 p.m.

The 49ers also endured a delay two games ago, when a power outage interrupted their Super Bowl XLVII defeat.

An initial flash of lightning took place on a third-down incompletion by Russell Wilson, who’s failed to complete his first six passes, other than an interception by 49ers rookie safety Eric Reid.

It was Reid’s second interception in as many games. On this one, he tracked down a 46-yard bomb by Wilson at the 49ers’ 24-yard line.

That interception came shortly after one by the Seahawks’ Earl Thomas at Seattle’s 1-yard line. Thomas corralled a Colin Kaepernick pass that Walter Thurmond knocked into the air and away from intended target Vernon Davis.

The 49ers were poised to score on that possession — their second of the game — thanks largely to Craig Dahl’s blocked punt on the Seahawks’ first possession. The 49ers took over at the Seahawks’ 33-yard line, and advanced to the 5 with the help of three Kaepernick runs and a 7-yard, third-down completion to Davis.

Starting nose tackle Ian Williams injured his left leg on the 49ers’ second defensive series and hopped off the field without putting weight on it. Williams will not return to the game. Glenn Dorsey replaced Williams and produced a sack on the next series.

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